package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.*;
import com.sky.entity.*;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.OrderBusinessException;
import com.sky.exception.ShoppingCartBusinessException;
import com.sky.mapper.*;
import com.sky.result.PageResult;
import com.sky.service.OrderService;
import com.sky.utils.HttpClientUtil;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderStatisticsVO;
import com.sky.vo.OrderSubmitVO;
import com.sky.vo.OrderVO;
import com.sky.websocket.WebSocketServer;
import lombok.Value;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.bridge.Message;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Configurable;
import org.springframework.core.annotation.Order;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.*;

@Service
@Slf4j
public class OrderServiceImpl implements OrderService {

    @Autowired
    private OrderMapper orderMapper;
    @Autowired
    private OrderDetailMapper orderDetailMapper;
    @Autowired
    private AddressBookMapper addressBookMapper;
    @Autowired
    private ShoppingCartMapper shoppingCartMapper;
    @Autowired
    private WeChatPayUtil weChatPayUtil;
    @Autowired
    private UserMapper userMapper;
    @Autowired
    private WebSocketServer webSocketServer;
    //@Value("${sky.shop.address}")
    private String shopAddress = "华南农业大学泰山宿舍区8栋";
    //@Value("${sky.baidu.ak}")
    private String ak = "";

    /**
     * 用户下单
     * @param ordersSubmitDTO
     * @return
     */
    @Transactional(rollbackFor = Exception.class)
    public OrderSubmitVO submitOrder(OrdersSubmitDTO ordersSubmitDTO) {
        //先处理各种业务异常之后再处理正常的业务逻辑（地址簿为空，购物车数据为空）
        //可能微信小程序前端已经对业务异常进行了判断，但是为了代码的健壮性，也尽量要做判断，可能以后有多个端，或是使用Postman进行测试
        AddressBook addressBook = addressBookMapper.getById(ordersSubmitDTO.getAddressBookId());
        if(addressBook == null){
            throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
        }

        //************************************************检查用户的收货地址是否超出配送范围***********************************************************
        //暂时不使用这个功能
        //checkOutOfRange(addressBook.getCityName() + addressBook.getDistrictName() + addressBook.getDetail());

        Long userId = BaseContext.getCurrentId();

        //1、查询当前用户的购物车数据
        ShoppingCart shoppingCart = new ShoppingCart();
        shoppingCart.setUserId(userId);
        List<ShoppingCart> shoppingCartList = shoppingCartMapper.list(shoppingCart);
        if(shoppingCartList == null ||shoppingCartList.size() == 0){
            throw new ShoppingCartBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }

        //2、向订单表插入1条数据
        Orders orders = new Orders();
        BeanUtils.copyProperties(ordersSubmitDTO, orders);
        orders.setOrderTime(LocalDateTime.now());
        orders.setPayStatus(Orders.UN_PAID);
        orders.setStatus(Orders.PENDING_PAYMENT);
        //使用系统当前时间时间戳为订单号
        //没有设置地址
        orders.setNumber(String.valueOf(System.currentTimeMillis()));
        orders.setPhone(addressBook.getPhone());
        orders.setConsignee(addressBook.getConsignee());
        orders.setUserId(userId);
        //将详细地址连一起
        String addressName = addressBook.getProvinceName() + addressBook.getCityName() + addressBook.getDistrictName() + addressBook.getDetail();
        orders.setAddress(addressName);

        orderMapper.insert(orders);

        List<OrderDetail> orderDetailList = new ArrayList<>();
        //3、向订单明细表插入n条数据
        for(ShoppingCart cart:shoppingCartList){
            OrderDetail orderDetail = new OrderDetail();
            BeanUtils.copyProperties(cart, orderDetail);
            orderDetail.setOrderId(orders.getId());
            orderDetailList.add(orderDetail);
        }

        orderDetailMapper.insertBatch(orderDetailList);

        //4、清空当前用户的购物车数据
        shoppingCartMapper.deleteByUserId(userId);
        //5、封装VO返回结果
        OrderSubmitVO orderSubmitVO = OrderSubmitVO.builder()
                .id(orders.getId())
                .orderTime(orders.getOrderTime())
                .orderNumber(orders.getNumber())
                .orderAmount(orders.getAmount())
                .build();

        return orderSubmitVO;
    }
    /**
     * 订单支付
     *
     * @param ordersPaymentDTO
     * @return
     */
    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
        // 当前登录用户id
        Long userId = BaseContext.getCurrentId();
        User user = userMapper.getById(userId);

        //调用微信支付接口，生成预支付交易单
        JSONObject jsonObject = weChatPayUtil.pay(
                ordersPaymentDTO.getOrderNumber(), //商户订单号
                new BigDecimal(0.01), //支付金额，单位 元
                "苍穹外卖订单", //商品描述
                user.getOpenid() //微信用户的openid
        );

        if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
            throw new OrderBusinessException("该订单已支付");
        }

        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
        vo.setPackageStr(jsonObject.getString("package"));

        return vo;
    }

    /**
     * 支付成功，修改订单状态
     *
     * @param outTradeNo
     */
    public void paySuccess(String outTradeNo) {
        log.info("用户支付成功！");
        // 根据订单号查询订单
        Orders ordersDB = orderMapper.getByNumber(outTradeNo);

        // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.TO_BE_CONFIRMED)
                .payStatus(Orders.PAID)
                .checkoutTime(LocalDateTime.now())
                .build();

        orderMapper.update(orders);

        //通过websocket向客户端浏览器推送消息 type orderId content
        Map map = new HashMap();
        map.put("type", 1);//1表示来单提醒，2表示客户催单
        map.put("orderId", ordersDB.getId());
        map.put("content", "订单号：" + outTradeNo);

        String json = JSON.toJSONString(map);
        webSocketServer.sendToAllClient(json);
    }

    /**
     * 用户分页查询历史订单
     * @return
     */
    public PageResult pageQueryForUser(int pageNum, int pageSize, Integer status) {
        //使用pagehelper把页数和页数大小存入线程，设置分页
        PageHelper.startPage(pageNum,pageSize);
        OrdersPageQueryDTO ordersPageQueryDTO = new OrdersPageQueryDTO();
        ordersPageQueryDTO.setStatus(status);
        ordersPageQueryDTO.setUserId(BaseContext.getCurrentId());
        Page<Orders> page = orderMapper.pageQuery(ordersPageQueryDTO);

        //分开查询，即先查orders表，然后再根据orderId查对应的OrderListDetail,把OrderListDetail封装入ordersVO中
        List<OrderVO> list = new ArrayList<>();
        for(Orders order : page){
            if(page != null && page.getTotal() > 0){

                Long orderId = order.getId();
                List<OrderDetail> orderDetails = orderDetailMapper.getByOrderId(orderId);

                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(order, orderVO);
                orderVO.setOrderDetailList(orderDetails);
                list.add(orderVO);
            }
        }
        /*PageResult pageResult = new PageResult();
        pageResult.setTotal(page.getTotal());
        pageResult.setRecords(page.getResult());*/
        return new PageResult(page.getTotal(),list);
    }

    /**
     * 管理员端条件查询
     * @param ordersPageQueryDTO
     * @return
     */
    public PageResult conditionSearch(OrdersPageQueryDTO ordersPageQueryDTO) {
        //分页
        PageHelper.startPage(ordersPageQueryDTO.getPage(),ordersPageQueryDTO.getPageSize());
        //获取订单数据
        Page<Orders> page = orderMapper.pageQuery(ordersPageQueryDTO);

        //获取订单菜品详细数据并转为字符串添加到OrderVO中，不用传入OrderDetail
        List<OrderVO> list = new ArrayList<>();
        //获取订单的菜品名称详细数据，并将其拼接为字符串
        //将订单数据和菜品字符串封装为OrderVO
        StringJoiner orderDishes = new StringJoiner(",");
        for(Orders order : page){
            if(page != null && page.getTotal() > 0){
                Long orderId = order.getId();
                //开始拼接
                List<OrderDetail> orderDetails = orderDetailMapper.getByOrderId(orderId);
                for(OrderDetail orderDetail : orderDetails){
                    orderDishes.add(orderDetail.getName());
                }
                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(order, orderVO);
                orderVO.setOrderDishes(orderDishes.toString());
                list.add(orderVO);
            }
        }

        return new PageResult(page.getTotal(),list);
    }

    /**
     * 各个状态的订单的数量统计
     * @return
     */
    public OrderStatisticsVO orderStatistics() {

        //根据状态分别查询出待接单、待派送和派送中的订单数量
        Integer confirmedStatistics = orderMapper.countStatus(Orders.CONFIRMED);
        Integer deliveryInProgressStatistics = orderMapper.countStatus(Orders.DELIVERY_IN_PROGRESS);
        Integer toBeConfirmedStatistics = orderMapper.countStatus(Orders.TO_BE_CONFIRMED);

        //将查询道德数据封装到OrderStatisticsVO中响应
        OrderStatisticsVO orderStatisticsVO = new OrderStatisticsVO();
        orderStatisticsVO.setConfirmed(confirmedStatistics);
        orderStatisticsVO.setDeliveryInProgress(deliveryInProgressStatistics);
        orderStatisticsVO.setToBeConfirmed(toBeConfirmedStatistics);
        return orderStatisticsVO;
    }

    /**
     * 管理员端根据订单id查询订单详情
     * @param id
     * @return
     */
    public OrderVO getOrderDetailsById(Long id) {
        //根据id获取订单
        Orders order = orderMapper.getById(id);
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(order.getId());
        OrderVO orderVO = new OrderVO();
        BeanUtils.copyProperties(order, orderVO);
        orderVO.setOrderDetailList(orderDetailList);

        return orderVO;
    }

    /**
     * 商家接单
     * @param ordersConfirmDTO
     */
    public void confirm(OrdersConfirmDTO ordersConfirmDTO) {

        Orders order = Orders.builder()
                .id(ordersConfirmDTO.getId())
                .status(Orders.CONFIRMED)
                .build();
        orderMapper.update(order);
    }

    /**
     * 商家拒单
     * @param ordersRejectionDTO
     */
    public void rejection(OrdersRejectionDTO ordersRejectionDTO) throws Exception{
        //根据id查询订单
        Orders orderDB = orderMapper.getById(ordersRejectionDTO.getId());

        //只有订单存在且状态为2（待接单）才可以拒单
        if(orderDB == null || !orderDB.getStatus().equals(Orders.TO_BE_CONFIRMED)){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        //判断支付状态，如果用户已支付，则退款
        Integer payStatus = orderDB.getPayStatus();
        //使用null安全语法
        if(Objects.equals(payStatus, Orders.PAID)){

            /*String refund = weChatPayUtil.refund(
                    orderDB.getNumber(),
                    orderDB.getNumber(),
                    new BigDecimal(0.01),
                    new BigDecimal(0.01)
            );*/
            //目前使用虚拟付款，因此这里就形式主义一下，然后就是直接将支付状态改为已退款！！！

            log.info("商家拒单后申请退款");

        }
        //拒单的原因、拒单需要退款，根据订单id更新订单状态、拒单时间、取消时间
        Orders order = Orders.builder()
                .id(ordersRejectionDTO.getId())
                .status(Orders.CANCELLED)
                .rejectionReason(ordersRejectionDTO.getRejectionReason())
                .cancelTime(LocalDateTime.now())
                .payStatus(Orders.REFUND)//这里直接将支付状态改为已退款！！！
                .build();
        orderMapper.update(order);
    }

    /**
     * 取消订单
     * @param orderscancelDTO
     */
    public void cancel(OrdersCancelDTO orderscancelDTO) throws Exception{
        //根据id查询订单
        Orders orderDB = orderMapper.getById(orderscancelDTO.getId());

        //判断支付状态用户已支付，则退款
        Integer payStatus = orderDB.getPayStatus();
        //使用null安全语法
        if(Objects.equals(payStatus, Orders.PAID)){
            /*String refund = weChatPayUtil.refund(
                    orderDB.getNumber(),
                    orderDB.getNumber(),
                    new BigDecimal(0.01),
                    new BigDecimal(0.01)
            );*/
            //目前使用虚拟付款，因此这里就形式主义一下，然后就是直接将支付状态改为已退款！！！
            log.info("商家取消订单后申请退款");

        }
        //拒单的原因、拒单需要退款，根据订单id更新订单状态、拒单时间、取消时间
        Orders order = Orders.builder()
                .id(orderscancelDTO.getId())
                .status(Orders.CANCELLED)//状态设为取消
                .rejectionReason(orderscancelDTO.getCancelReason())//取消原因
                .cancelTime(LocalDateTime.now())//取消时间
                .payStatus(Orders.REFUND)//这里直接将支付状态改为已退款！！！
                .build();
        orderMapper.update(order);
    }

    /**
     * 派送订单
     * @param id
     */
    public void delivery(Long id) {
        //根据订单id查询订单
        Orders orderDB = orderMapper.getById(id);
        //订单不为空且状态为已确认
        if(orderDB == null || !orderDB.getStatus().equals(Orders.CONFIRMED)){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders order = Orders.builder()
                .id(orderDB.getId())
                .status(Orders.DELIVERY_IN_PROGRESS)//更新订单状态为配送中
                .build();

        orderMapper.update(order);
    }

    /**
     * 完成订单
     * @param id
     */
    public void complete(Long id) {
        //根据订单id查询订单
        Orders orderDB = orderMapper.getById(id);

        //订单存在且状态为派送中
        if(orderDB == null || !orderDB.getStatus().equals(Orders.DELIVERY_IN_PROGRESS)){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders order = Orders.builder()
                .id(orderDB.getId())
                .status(Orders.COMPLETED)//更新订单状态为已完成
                .deliveryTime(LocalDateTime.now())//设置配送到达时间
                .build();

        orderMapper.update(order);
    }

    /**
     * 用户再来一单
     */
    public void repetition(Long id) {
        //查询当前用户id
        Long userId = BaseContext.getCurrentId();
        //根据订单id查询当订单详情
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(id);

        //将订单详情对象转化为购物车对象
        List<ShoppingCart> shoppingCartList = new ArrayList<>();
        for(OrderDetail orderDetail : orderDetailList){
            ShoppingCart shoppingCart = ShoppingCart.builder()
                    .userId(userId)
                    .createTime(LocalDateTime.now())
                    .build();
            BeanUtils.copyProperties(orderDetail, shoppingCart);
            shoppingCartList.add(shoppingCart);
        }

        shoppingCartMapper.insertBatch(shoppingCartList);

    }

    /**
     * 用户取消订单
     * @param id
     */
    public void userCancelById(Long id) throws Exception{
        // 根据id查询订单
        Orders ordersDB = orderMapper.getById(id);

        // 校验订单是否存在
        if (ordersDB == null) {
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }

        //订单状态 1待付款 2待接单 3已接单 4派送中 5已完成 6已取消
        if (ordersDB.getStatus() > 2) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders orders = new Orders();
        orders.setId(ordersDB.getId());

        // 订单处于待接单状态下取消，需要进行退款
        if (ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
            //调用微信支付退款接口
            //！！没有微信支付，模拟退款！！
            /*weChatPayUtil.refund(
                    ordersDB.getNumber(), //商户订单号
                    ordersDB.getNumber(), //商户退款单号
                    new BigDecimal(0.01),//退款金额，单位 元
                    new BigDecimal(0.01));//原订单金额
*/
            //支付状态修改为 退款
            orders.setPayStatus(Orders.REFUND);
        }

        // 更新订单状态、取消原因、取消时间
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelReason("用户取消");
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);
    }

    /**
     * 客户催单
     * @param id
     */
    public void reminder(Long id){
        // 根据id查询订单
        Orders ordersDB = orderMapper.getById(id);
        // 校验订单是否存在
        if (ordersDB == null) {
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }

        Map map = new HashMap();
        map.put("type",2);//1表示来单提醒，2表示客户催单
        map.put("orderId",id);
        map.put("content","订单号：" + ordersDB.getNumber());
        log.info("json格式的map的值：{}",JSON.toJSONString(map));
        webSocketServer.sendToAllClient(JSON.toJSONString(map));

    }

    /**
     * 检查客户的收货地址是否超出配送范围
     * @param address
     */
    private void checkOutOfRange(String address) {
        Map map = new HashMap();
        map.put("address",shopAddress);
        map.put("output","json");
        map.put("ak",ak);

        //获取店铺的经纬度坐标
        String shopCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        JSONObject jsonObject = JSON.parseObject(shopCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("店铺地址解析失败");
        }

        //数据解析
        JSONObject location = jsonObject.getJSONObject("result").getJSONObject("location");
        String lat = location.getString("lat");
        String lng = location.getString("lng");
        //店铺经纬度坐标
        String shopLngLat = lat + "," + lng;

        map.put("address",address);
        //获取用户收货地址的经纬度坐标
        String userCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        jsonObject = JSON.parseObject(userCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("收货地址解析失败");
        }

        //数据解析
        location = jsonObject.getJSONObject("result").getJSONObject("location");
        lat = location.getString("lat");
        lng = location.getString("lng");
        //用户收货地址经纬度坐标
        String userLngLat = lat + "," + lng;

        map.put("origin",shopLngLat);
        map.put("destination",userLngLat);
        map.put("steps_info","0");

        //路线规划
        String json = HttpClientUtil.doGet("https://api.map.baidu.com/directionlite/v1/driving", map);

        jsonObject = JSON.parseObject(json);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("配送路线规划失败");
        }

        //数据解析
        JSONObject result = jsonObject.getJSONObject("result");
        JSONArray jsonArray = (JSONArray) result.get("routes");
        Integer distance = (Integer) ((JSONObject) jsonArray.get(0)).get("distance");

        if(distance > 5000){
            //配送距离超过5000米
            throw new OrderBusinessException("超出配送范围");
        }
    }

}
